Much of the route runs in close proximity to the SunRail commuter railroad line.

There is a connecting street which extends the route to Orange Blossom Trail in Kissimmee.

Along the entire route, the places passed are Meadow Woods, Southchase, Taft, Belle Isle, Pine Castle, Edgewood, Orlando, and Winter Park.

In Downtown Orlando, it is one of the 2 state roads that border Lake Eola, the other being SR 526.

SR 3A was defined by number in 1935 state law, chapter 17341, approved May 27, 1935: This was established to keep this section of former SR 3, which was to be bypassed around 1937 along the Orlando Shortcut (now Orlando Avenue) and Mills Avenue, a state road (and probably part of US 17/US 92).